IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

Try:192.168.1.10/24 10.0.0.0/8 172.16.5.4/20 203.0.113.9/29

IPv6 calculator →

private IP (RFC 1918)10.0.82.0/23

network10.0.82.0/23

broadcast10.0.83.255

first host10.0.82.1

last host10.0.83.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.0.82.0/23

address00001010.00000000.01010010.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.00000000.01010010.00000000

broadcast00001010.00000000.01010011.11111111

green = network part, grey = host part

hex0x0a005200

decimal167793152

reverse dns0.82.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:5200

/23 split into /32 · 512 subnets

close ×

#	network	host range	broadcast
1	10.0.82.0/32	10.0.82.0 – 10.0.82.0	10.0.82.0
2	10.0.82.1/32	10.0.82.1 – 10.0.82.1	10.0.82.1
3	10.0.82.2/32	10.0.82.2 – 10.0.82.2	10.0.82.2
4	10.0.82.3/32	10.0.82.3 – 10.0.82.3	10.0.82.3
5	10.0.82.4/32	10.0.82.4 – 10.0.82.4	10.0.82.4
6	10.0.82.5/32	10.0.82.5 – 10.0.82.5	10.0.82.5
7	10.0.82.6/32	10.0.82.6 – 10.0.82.6	10.0.82.6
8	10.0.82.7/32	10.0.82.7 – 10.0.82.7	10.0.82.7
9	10.0.82.8/32	10.0.82.8 – 10.0.82.8	10.0.82.8
10	10.0.82.9/32	10.0.82.9 – 10.0.82.9	10.0.82.9
11	10.0.82.10/32	10.0.82.10 – 10.0.82.10	10.0.82.10
12	10.0.82.11/32	10.0.82.11 – 10.0.82.11	10.0.82.11
13	10.0.82.12/32	10.0.82.12 – 10.0.82.12	10.0.82.12
14	10.0.82.13/32	10.0.82.13 – 10.0.82.13	10.0.82.13
15	10.0.82.14/32	10.0.82.14 – 10.0.82.14	10.0.82.14
16	10.0.82.15/32	10.0.82.15 – 10.0.82.15	10.0.82.15
17	10.0.82.16/32	10.0.82.16 – 10.0.82.16	10.0.82.16
18	10.0.82.17/32	10.0.82.17 – 10.0.82.17	10.0.82.17
19	10.0.82.18/32	10.0.82.18 – 10.0.82.18	10.0.82.18
20	10.0.82.19/32	10.0.82.19 – 10.0.82.19	10.0.82.19
21	10.0.82.20/32	10.0.82.20 – 10.0.82.20	10.0.82.20
22	10.0.82.21/32	10.0.82.21 – 10.0.82.21	10.0.82.21
23	10.0.82.22/32	10.0.82.22 – 10.0.82.22	10.0.82.22
24	10.0.82.23/32	10.0.82.23 – 10.0.82.23	10.0.82.23
25	10.0.82.24/32	10.0.82.24 – 10.0.82.24	10.0.82.24
26	10.0.82.25/32	10.0.82.25 – 10.0.82.25	10.0.82.25
27	10.0.82.26/32	10.0.82.26 – 10.0.82.26	10.0.82.26
28	10.0.82.27/32	10.0.82.27 – 10.0.82.27	10.0.82.27
29	10.0.82.28/32	10.0.82.28 – 10.0.82.28	10.0.82.28
30	10.0.82.29/32	10.0.82.29 – 10.0.82.29	10.0.82.29
31	10.0.82.30/32	10.0.82.30 – 10.0.82.30	10.0.82.30
32	10.0.82.31/32	10.0.82.31 – 10.0.82.31	10.0.82.31
33	10.0.82.32/32	10.0.82.32 – 10.0.82.32	10.0.82.32
34	10.0.82.33/32	10.0.82.33 – 10.0.82.33	10.0.82.33
35	10.0.82.34/32	10.0.82.34 – 10.0.82.34	10.0.82.34
36	10.0.82.35/32	10.0.82.35 – 10.0.82.35	10.0.82.35
37	10.0.82.36/32	10.0.82.36 – 10.0.82.36	10.0.82.36
38	10.0.82.37/32	10.0.82.37 – 10.0.82.37	10.0.82.37
39	10.0.82.38/32	10.0.82.38 – 10.0.82.38	10.0.82.38
40	10.0.82.39/32	10.0.82.39 – 10.0.82.39	10.0.82.39
41	10.0.82.40/32	10.0.82.40 – 10.0.82.40	10.0.82.40
42	10.0.82.41/32	10.0.82.41 – 10.0.82.41	10.0.82.41
43	10.0.82.42/32	10.0.82.42 – 10.0.82.42	10.0.82.42
44	10.0.82.43/32	10.0.82.43 – 10.0.82.43	10.0.82.43
45	10.0.82.44/32	10.0.82.44 – 10.0.82.44	10.0.82.44
46	10.0.82.45/32	10.0.82.45 – 10.0.82.45	10.0.82.45
47	10.0.82.46/32	10.0.82.46 – 10.0.82.46	10.0.82.46
48	10.0.82.47/32	10.0.82.47 – 10.0.82.47	10.0.82.47
49	10.0.82.48/32	10.0.82.48 – 10.0.82.48	10.0.82.48
50	10.0.82.49/32	10.0.82.49 – 10.0.82.49	10.0.82.49
51	10.0.82.50/32	10.0.82.50 – 10.0.82.50	10.0.82.50
52	10.0.82.51/32	10.0.82.51 – 10.0.82.51	10.0.82.51
53	10.0.82.52/32	10.0.82.52 – 10.0.82.52	10.0.82.52
54	10.0.82.53/32	10.0.82.53 – 10.0.82.53	10.0.82.53
55	10.0.82.54/32	10.0.82.54 – 10.0.82.54	10.0.82.54
56	10.0.82.55/32	10.0.82.55 – 10.0.82.55	10.0.82.55
57	10.0.82.56/32	10.0.82.56 – 10.0.82.56	10.0.82.56
58	10.0.82.57/32	10.0.82.57 – 10.0.82.57	10.0.82.57
59	10.0.82.58/32	10.0.82.58 – 10.0.82.58	10.0.82.58
60	10.0.82.59/32	10.0.82.59 – 10.0.82.59	10.0.82.59
61	10.0.82.60/32	10.0.82.60 – 10.0.82.60	10.0.82.60
62	10.0.82.61/32	10.0.82.61 – 10.0.82.61	10.0.82.61
63	10.0.82.62/32	10.0.82.62 – 10.0.82.62	10.0.82.62
64	10.0.82.63/32	10.0.82.63 – 10.0.82.63	10.0.82.63
65	10.0.82.64/32	10.0.82.64 – 10.0.82.64	10.0.82.64
66	10.0.82.65/32	10.0.82.65 – 10.0.82.65	10.0.82.65
67	10.0.82.66/32	10.0.82.66 – 10.0.82.66	10.0.82.66
68	10.0.82.67/32	10.0.82.67 – 10.0.82.67	10.0.82.67
69	10.0.82.68/32	10.0.82.68 – 10.0.82.68	10.0.82.68
70	10.0.82.69/32	10.0.82.69 – 10.0.82.69	10.0.82.69
71	10.0.82.70/32	10.0.82.70 – 10.0.82.70	10.0.82.70
72	10.0.82.71/32	10.0.82.71 – 10.0.82.71	10.0.82.71
73	10.0.82.72/32	10.0.82.72 – 10.0.82.72	10.0.82.72
74	10.0.82.73/32	10.0.82.73 – 10.0.82.73	10.0.82.73
75	10.0.82.74/32	10.0.82.74 – 10.0.82.74	10.0.82.74
76	10.0.82.75/32	10.0.82.75 – 10.0.82.75	10.0.82.75
77	10.0.82.76/32	10.0.82.76 – 10.0.82.76	10.0.82.76
78	10.0.82.77/32	10.0.82.77 – 10.0.82.77	10.0.82.77
79	10.0.82.78/32	10.0.82.78 – 10.0.82.78	10.0.82.78
80	10.0.82.79/32	10.0.82.79 – 10.0.82.79	10.0.82.79
81	10.0.82.80/32	10.0.82.80 – 10.0.82.80	10.0.82.80
82	10.0.82.81/32	10.0.82.81 – 10.0.82.81	10.0.82.81
83	10.0.82.82/32	10.0.82.82 – 10.0.82.82	10.0.82.82
84	10.0.82.83/32	10.0.82.83 – 10.0.82.83	10.0.82.83
85	10.0.82.84/32	10.0.82.84 – 10.0.82.84	10.0.82.84
86	10.0.82.85/32	10.0.82.85 – 10.0.82.85	10.0.82.85
87	10.0.82.86/32	10.0.82.86 – 10.0.82.86	10.0.82.86
88	10.0.82.87/32	10.0.82.87 – 10.0.82.87	10.0.82.87
89	10.0.82.88/32	10.0.82.88 – 10.0.82.88	10.0.82.88
90	10.0.82.89/32	10.0.82.89 – 10.0.82.89	10.0.82.89
91	10.0.82.90/32	10.0.82.90 – 10.0.82.90	10.0.82.90
92	10.0.82.91/32	10.0.82.91 – 10.0.82.91	10.0.82.91
93	10.0.82.92/32	10.0.82.92 – 10.0.82.92	10.0.82.92
94	10.0.82.93/32	10.0.82.93 – 10.0.82.93	10.0.82.93
95	10.0.82.94/32	10.0.82.94 – 10.0.82.94	10.0.82.94
96	10.0.82.95/32	10.0.82.95 – 10.0.82.95	10.0.82.95
97	10.0.82.96/32	10.0.82.96 – 10.0.82.96	10.0.82.96
98	10.0.82.97/32	10.0.82.97 – 10.0.82.97	10.0.82.97
99	10.0.82.98/32	10.0.82.98 – 10.0.82.98	10.0.82.98
100	10.0.82.99/32	10.0.82.99 – 10.0.82.99	10.0.82.99
101	10.0.82.100/32	10.0.82.100 – 10.0.82.100	10.0.82.100
102	10.0.82.101/32	10.0.82.101 – 10.0.82.101	10.0.82.101
103	10.0.82.102/32	10.0.82.102 – 10.0.82.102	10.0.82.102
104	10.0.82.103/32	10.0.82.103 – 10.0.82.103	10.0.82.103
105	10.0.82.104/32	10.0.82.104 – 10.0.82.104	10.0.82.104
106	10.0.82.105/32	10.0.82.105 – 10.0.82.105	10.0.82.105
107	10.0.82.106/32	10.0.82.106 – 10.0.82.106	10.0.82.106
108	10.0.82.107/32	10.0.82.107 – 10.0.82.107	10.0.82.107
109	10.0.82.108/32	10.0.82.108 – 10.0.82.108	10.0.82.108
110	10.0.82.109/32	10.0.82.109 – 10.0.82.109	10.0.82.109
111	10.0.82.110/32	10.0.82.110 – 10.0.82.110	10.0.82.110
112	10.0.82.111/32	10.0.82.111 – 10.0.82.111	10.0.82.111
113	10.0.82.112/32	10.0.82.112 – 10.0.82.112	10.0.82.112
114	10.0.82.113/32	10.0.82.113 – 10.0.82.113	10.0.82.113
115	10.0.82.114/32	10.0.82.114 – 10.0.82.114	10.0.82.114
116	10.0.82.115/32	10.0.82.115 – 10.0.82.115	10.0.82.115
117	10.0.82.116/32	10.0.82.116 – 10.0.82.116	10.0.82.116
118	10.0.82.117/32	10.0.82.117 – 10.0.82.117	10.0.82.117
119	10.0.82.118/32	10.0.82.118 – 10.0.82.118	10.0.82.118
120	10.0.82.119/32	10.0.82.119 – 10.0.82.119	10.0.82.119
121	10.0.82.120/32	10.0.82.120 – 10.0.82.120	10.0.82.120
122	10.0.82.121/32	10.0.82.121 – 10.0.82.121	10.0.82.121
123	10.0.82.122/32	10.0.82.122 – 10.0.82.122	10.0.82.122
124	10.0.82.123/32	10.0.82.123 – 10.0.82.123	10.0.82.123
125	10.0.82.124/32	10.0.82.124 – 10.0.82.124	10.0.82.124
126	10.0.82.125/32	10.0.82.125 – 10.0.82.125	10.0.82.125
127	10.0.82.126/32	10.0.82.126 – 10.0.82.126	10.0.82.126
128	10.0.82.127/32	10.0.82.127 – 10.0.82.127	10.0.82.127
129	10.0.82.128/32	10.0.82.128 – 10.0.82.128	10.0.82.128
130	10.0.82.129/32	10.0.82.129 – 10.0.82.129	10.0.82.129
131	10.0.82.130/32	10.0.82.130 – 10.0.82.130	10.0.82.130
132	10.0.82.131/32	10.0.82.131 – 10.0.82.131	10.0.82.131
133	10.0.82.132/32	10.0.82.132 – 10.0.82.132	10.0.82.132
134	10.0.82.133/32	10.0.82.133 – 10.0.82.133	10.0.82.133
135	10.0.82.134/32	10.0.82.134 – 10.0.82.134	10.0.82.134
136	10.0.82.135/32	10.0.82.135 – 10.0.82.135	10.0.82.135
137	10.0.82.136/32	10.0.82.136 – 10.0.82.136	10.0.82.136
138	10.0.82.137/32	10.0.82.137 – 10.0.82.137	10.0.82.137
139	10.0.82.138/32	10.0.82.138 – 10.0.82.138	10.0.82.138
140	10.0.82.139/32	10.0.82.139 – 10.0.82.139	10.0.82.139
141	10.0.82.140/32	10.0.82.140 – 10.0.82.140	10.0.82.140
142	10.0.82.141/32	10.0.82.141 – 10.0.82.141	10.0.82.141
143	10.0.82.142/32	10.0.82.142 – 10.0.82.142	10.0.82.142
144	10.0.82.143/32	10.0.82.143 – 10.0.82.143	10.0.82.143
145	10.0.82.144/32	10.0.82.144 – 10.0.82.144	10.0.82.144
146	10.0.82.145/32	10.0.82.145 – 10.0.82.145	10.0.82.145
147	10.0.82.146/32	10.0.82.146 – 10.0.82.146	10.0.82.146
148	10.0.82.147/32	10.0.82.147 – 10.0.82.147	10.0.82.147
149	10.0.82.148/32	10.0.82.148 – 10.0.82.148	10.0.82.148
150	10.0.82.149/32	10.0.82.149 – 10.0.82.149	10.0.82.149
151	10.0.82.150/32	10.0.82.150 – 10.0.82.150	10.0.82.150
152	10.0.82.151/32	10.0.82.151 – 10.0.82.151	10.0.82.151
153	10.0.82.152/32	10.0.82.152 – 10.0.82.152	10.0.82.152
154	10.0.82.153/32	10.0.82.153 – 10.0.82.153	10.0.82.153
155	10.0.82.154/32	10.0.82.154 – 10.0.82.154	10.0.82.154
156	10.0.82.155/32	10.0.82.155 – 10.0.82.155	10.0.82.155
157	10.0.82.156/32	10.0.82.156 – 10.0.82.156	10.0.82.156
158	10.0.82.157/32	10.0.82.157 – 10.0.82.157	10.0.82.157
159	10.0.82.158/32	10.0.82.158 – 10.0.82.158	10.0.82.158
160	10.0.82.159/32	10.0.82.159 – 10.0.82.159	10.0.82.159
161	10.0.82.160/32	10.0.82.160 – 10.0.82.160	10.0.82.160
162	10.0.82.161/32	10.0.82.161 – 10.0.82.161	10.0.82.161
163	10.0.82.162/32	10.0.82.162 – 10.0.82.162	10.0.82.162
164	10.0.82.163/32	10.0.82.163 – 10.0.82.163	10.0.82.163
165	10.0.82.164/32	10.0.82.164 – 10.0.82.164	10.0.82.164
166	10.0.82.165/32	10.0.82.165 – 10.0.82.165	10.0.82.165
167	10.0.82.166/32	10.0.82.166 – 10.0.82.166	10.0.82.166
168	10.0.82.167/32	10.0.82.167 – 10.0.82.167	10.0.82.167
169	10.0.82.168/32	10.0.82.168 – 10.0.82.168	10.0.82.168
170	10.0.82.169/32	10.0.82.169 – 10.0.82.169	10.0.82.169
171	10.0.82.170/32	10.0.82.170 – 10.0.82.170	10.0.82.170
172	10.0.82.171/32	10.0.82.171 – 10.0.82.171	10.0.82.171
173	10.0.82.172/32	10.0.82.172 – 10.0.82.172	10.0.82.172
174	10.0.82.173/32	10.0.82.173 – 10.0.82.173	10.0.82.173
175	10.0.82.174/32	10.0.82.174 – 10.0.82.174	10.0.82.174
176	10.0.82.175/32	10.0.82.175 – 10.0.82.175	10.0.82.175
177	10.0.82.176/32	10.0.82.176 – 10.0.82.176	10.0.82.176
178	10.0.82.177/32	10.0.82.177 – 10.0.82.177	10.0.82.177
179	10.0.82.178/32	10.0.82.178 – 10.0.82.178	10.0.82.178
180	10.0.82.179/32	10.0.82.179 – 10.0.82.179	10.0.82.179
181	10.0.82.180/32	10.0.82.180 – 10.0.82.180	10.0.82.180
182	10.0.82.181/32	10.0.82.181 – 10.0.82.181	10.0.82.181
183	10.0.82.182/32	10.0.82.182 – 10.0.82.182	10.0.82.182
184	10.0.82.183/32	10.0.82.183 – 10.0.82.183	10.0.82.183
185	10.0.82.184/32	10.0.82.184 – 10.0.82.184	10.0.82.184
186	10.0.82.185/32	10.0.82.185 – 10.0.82.185	10.0.82.185
187	10.0.82.186/32	10.0.82.186 – 10.0.82.186	10.0.82.186
188	10.0.82.187/32	10.0.82.187 – 10.0.82.187	10.0.82.187
189	10.0.82.188/32	10.0.82.188 – 10.0.82.188	10.0.82.188
190	10.0.82.189/32	10.0.82.189 – 10.0.82.189	10.0.82.189
191	10.0.82.190/32	10.0.82.190 – 10.0.82.190	10.0.82.190
192	10.0.82.191/32	10.0.82.191 – 10.0.82.191	10.0.82.191
193	10.0.82.192/32	10.0.82.192 – 10.0.82.192	10.0.82.192
194	10.0.82.193/32	10.0.82.193 – 10.0.82.193	10.0.82.193
195	10.0.82.194/32	10.0.82.194 – 10.0.82.194	10.0.82.194
196	10.0.82.195/32	10.0.82.195 – 10.0.82.195	10.0.82.195
197	10.0.82.196/32	10.0.82.196 – 10.0.82.196	10.0.82.196
198	10.0.82.197/32	10.0.82.197 – 10.0.82.197	10.0.82.197
199	10.0.82.198/32	10.0.82.198 – 10.0.82.198	10.0.82.198
200	10.0.82.199/32	10.0.82.199 – 10.0.82.199	10.0.82.199
201	10.0.82.200/32	10.0.82.200 – 10.0.82.200	10.0.82.200
202	10.0.82.201/32	10.0.82.201 – 10.0.82.201	10.0.82.201
203	10.0.82.202/32	10.0.82.202 – 10.0.82.202	10.0.82.202
204	10.0.82.203/32	10.0.82.203 – 10.0.82.203	10.0.82.203
205	10.0.82.204/32	10.0.82.204 – 10.0.82.204	10.0.82.204
206	10.0.82.205/32	10.0.82.205 – 10.0.82.205	10.0.82.205
207	10.0.82.206/32	10.0.82.206 – 10.0.82.206	10.0.82.206
208	10.0.82.207/32	10.0.82.207 – 10.0.82.207	10.0.82.207
209	10.0.82.208/32	10.0.82.208 – 10.0.82.208	10.0.82.208
210	10.0.82.209/32	10.0.82.209 – 10.0.82.209	10.0.82.209
211	10.0.82.210/32	10.0.82.210 – 10.0.82.210	10.0.82.210
212	10.0.82.211/32	10.0.82.211 – 10.0.82.211	10.0.82.211
213	10.0.82.212/32	10.0.82.212 – 10.0.82.212	10.0.82.212
214	10.0.82.213/32	10.0.82.213 – 10.0.82.213	10.0.82.213
215	10.0.82.214/32	10.0.82.214 – 10.0.82.214	10.0.82.214
216	10.0.82.215/32	10.0.82.215 – 10.0.82.215	10.0.82.215
217	10.0.82.216/32	10.0.82.216 – 10.0.82.216	10.0.82.216
218	10.0.82.217/32	10.0.82.217 – 10.0.82.217	10.0.82.217
219	10.0.82.218/32	10.0.82.218 – 10.0.82.218	10.0.82.218
220	10.0.82.219/32	10.0.82.219 – 10.0.82.219	10.0.82.219
221	10.0.82.220/32	10.0.82.220 – 10.0.82.220	10.0.82.220
222	10.0.82.221/32	10.0.82.221 – 10.0.82.221	10.0.82.221
223	10.0.82.222/32	10.0.82.222 – 10.0.82.222	10.0.82.222
224	10.0.82.223/32	10.0.82.223 – 10.0.82.223	10.0.82.223
225	10.0.82.224/32	10.0.82.224 – 10.0.82.224	10.0.82.224
226	10.0.82.225/32	10.0.82.225 – 10.0.82.225	10.0.82.225
227	10.0.82.226/32	10.0.82.226 – 10.0.82.226	10.0.82.226
228	10.0.82.227/32	10.0.82.227 – 10.0.82.227	10.0.82.227
229	10.0.82.228/32	10.0.82.228 – 10.0.82.228	10.0.82.228
230	10.0.82.229/32	10.0.82.229 – 10.0.82.229	10.0.82.229
231	10.0.82.230/32	10.0.82.230 – 10.0.82.230	10.0.82.230
232	10.0.82.231/32	10.0.82.231 – 10.0.82.231	10.0.82.231
233	10.0.82.232/32	10.0.82.232 – 10.0.82.232	10.0.82.232
234	10.0.82.233/32	10.0.82.233 – 10.0.82.233	10.0.82.233
235	10.0.82.234/32	10.0.82.234 – 10.0.82.234	10.0.82.234
236	10.0.82.235/32	10.0.82.235 – 10.0.82.235	10.0.82.235
237	10.0.82.236/32	10.0.82.236 – 10.0.82.236	10.0.82.236
238	10.0.82.237/32	10.0.82.237 – 10.0.82.237	10.0.82.237
239	10.0.82.238/32	10.0.82.238 – 10.0.82.238	10.0.82.238
240	10.0.82.239/32	10.0.82.239 – 10.0.82.239	10.0.82.239
241	10.0.82.240/32	10.0.82.240 – 10.0.82.240	10.0.82.240
242	10.0.82.241/32	10.0.82.241 – 10.0.82.241	10.0.82.241
243	10.0.82.242/32	10.0.82.242 – 10.0.82.242	10.0.82.242
244	10.0.82.243/32	10.0.82.243 – 10.0.82.243	10.0.82.243
245	10.0.82.244/32	10.0.82.244 – 10.0.82.244	10.0.82.244
246	10.0.82.245/32	10.0.82.245 – 10.0.82.245	10.0.82.245
247	10.0.82.246/32	10.0.82.246 – 10.0.82.246	10.0.82.246
248	10.0.82.247/32	10.0.82.247 – 10.0.82.247	10.0.82.247
249	10.0.82.248/32	10.0.82.248 – 10.0.82.248	10.0.82.248
250	10.0.82.249/32	10.0.82.249 – 10.0.82.249	10.0.82.249
251	10.0.82.250/32	10.0.82.250 – 10.0.82.250	10.0.82.250
252	10.0.82.251/32	10.0.82.251 – 10.0.82.251	10.0.82.251
253	10.0.82.252/32	10.0.82.252 – 10.0.82.252	10.0.82.252
254	10.0.82.253/32	10.0.82.253 – 10.0.82.253	10.0.82.253
255	10.0.82.254/32	10.0.82.254 – 10.0.82.254	10.0.82.254
256	10.0.82.255/32	10.0.82.255 – 10.0.82.255	10.0.82.255

showing 256 of 512

01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefix	subnet mask	addresses	hosts	in your /23
/0	0.0.0.0	4,294,967,296	4,294,967,294	-
/1	128.0.0.0	2,147,483,648	2,147,483,646	-
/2	192.0.0.0	1,073,741,824	1,073,741,822	-
/3	224.0.0.0	536,870,912	536,870,910	-
/4	240.0.0.0	268,435,456	268,435,454	-
/5	248.0.0.0	134,217,728	134,217,726	-
/6	252.0.0.0	67,108,864	67,108,862	-
/7	254.0.0.0	33,554,432	33,554,430	-
/8	255.0.0.0	16,777,216	16,777,214	-
/9	255.128.0.0	8,388,608	8,388,606	-
/10	255.192.0.0	4,194,304	4,194,302	-
/11	255.224.0.0	2,097,152	2,097,150	-
/12	255.240.0.0	1,048,576	1,048,574	-
/13	255.248.0.0	524,288	524,286	-
/14	255.252.0.0	262,144	262,142	-
/15	255.254.0.0	131,072	131,070	-
/16	255.255.0.0	65,536	65,534	-
/17	255.255.128.0	32,768	32,766	-
/18	255.255.192.0	16,384	16,382	-
/19	255.255.224.0	8,192	8,190	-
/20	255.255.240.0	4,096	4,094	-
/21	255.255.248.0	2,048	2,046	-
/22	255.255.252.0	1,024	1,022	-
/23	255.255.254.0	512	510	1
/24	255.255.255.0	256	254	2 split →
/25	255.255.255.128	128	126	4 split →
/26	255.255.255.192	64	62	8 split →
/27	255.255.255.224	32	30	16 split →
/28	255.255.255.240	16	14	32 split →
/29	255.255.255.248	8	6	64 split →
/30	255.255.255.252	4	2	128 split →
/31	255.255.255.254	2	2	256 split →
/32	255.255.255.255	1	1	512 split →

02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →